3 files changed, 58 insertions, 0 deletions

diff --git a/arch/x86/kvm/vmx/evmcs.c b/arch/x86/kvm/vmx/evmcs.c
index ba886fb7bc39..303813423c3e 100644
--- a/arch/x86/kvm/vmx/evmcs.c
+++ b/arch/x86/kvm/vmx/evmcs.c
@@ -7,6 +7,7 @@
 #include "evmcs.h"
 #include "vmcs.h"
 #include "vmx.h"
+#include "trace.h"
 
 DEFINE_STATIC_KEY_FALSE(enable_evmcs);
 
@@ -372,6 +373,58 @@ void nested_evmcs_filter_control_msr(u32 msr_index, u64 *pdata)
 	*pdata = ctl_low | ((u64)ctl_high << 32);
 }
 
+int nested_evmcs_check_controls(struct vmcs12 *vmcs12)
+{
+	int ret = 0;
+	u32 unsupp_ctl;
+
+	unsupp_ctl = vmcs12->pin_based_vm_exec_control &
+		EVMCS1_UNSUPPORTED_PINCTRL;
+	if (unsupp_ctl) {
+		trace_kvm_nested_vmenter_failed(
+			"eVMCS: unsupported pin-based VM-execution controls",
+			unsupp_ctl);
+		ret = -EINVAL;
+	}
+
+	unsupp_ctl = vmcs12->secondary_vm_exec_control &
+		EVMCS1_UNSUPPORTED_2NDEXEC;
+	if (unsupp_ctl) {
+		trace_kvm_nested_vmenter_failed(
+			"eVMCS: unsupported secondary VM-execution controls",
+			unsupp_ctl);
+		ret = -EINVAL;
+	}
+
+	unsupp_ctl = vmcs12->vm_exit_controls &
+		EVMCS1_UNSUPPORTED_VMEXIT_CTRL;
+	if (unsupp_ctl) {
+		trace_kvm_nested_vmenter_failed(
+			"eVMCS: unsupported VM-exit controls",
+			unsupp_ctl);
+		ret = -EINVAL;
+	}
+
+	unsupp_ctl = vmcs12->vm_entry_controls &
+		EVMCS1_UNSUPPORTED_VMENTRY_CTRL;
+	if (unsupp_ctl) {
+		trace_kvm_nested_vmenter_failed(
+			"eVMCS: unsupported VM-entry controls",
+			unsupp_ctl);
+		ret = -EINVAL;
+	}
+
+	unsupp_ctl = vmcs12->vm_function_control & EVMCS1_UNSUPPORTED_VMFUNC;
+	if (unsupp_ctl) {
+		trace_kvm_nested_vmenter_failed(
+			"eVMCS: unsupported VM-function controls",
+			unsupp_ctl);
+		ret = -EINVAL;
+	}
+
+	return ret;
+}
+
 int nested_enable_evmcs(struct kvm_vcpu *vcpu,
 			uint16_t *vmcs_version)
 {
diff --git a/arch/x86/kvm/vmx/evmcs.h b/arch/x86/kvm/vmx/evmcs.h
index b88d9807a796..6de47f2569c9 100644
--- a/arch/x86/kvm/vmx/evmcs.h
+++ b/arch/x86/kvm/vmx/evmcs.h
@@ -10,6 +10,7 @@
 
 #include "capabilities.h"
 #include "vmcs.h"
+#include "vmcs12.h"
 
 struct vmcs_config;
 
@@ -202,5 +203,6 @@ uint16_t nested_get_evmcs_version(struct kvm_vcpu *vcpu);
 int nested_enable_evmcs(struct kvm_vcpu *vcpu,
 			uint16_t *vmcs_version);
 void nested_evmcs_filter_control_msr(u32 msr_index, u64 *pdata);
+int nested_evmcs_check_controls(struct vmcs12 *vmcs12);
 
 #endif /* __KVM_X86_VMX_EVMCS_H */
diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c
index 0118637fb970..657c2eda357c 100644
--- a/arch/x86/kvm/vmx/nested.c
+++ b/arch/x86/kvm/vmx/nested.c
@@ -2757,6 +2757,9 @@ static int nested_vmx_check_controls(struct kvm_vcpu *vcpu,
 	    nested_check_vm_entry_controls(vcpu, vmcs12))
 		return -EINVAL;
 
+	if (to_vmx(vcpu)->nested.enlightened_vmcs_enabled)
+		return nested_evmcs_check_controls(vmcs12);
+
 	return 0;
 }